The word 'trauma' originates from the Greek 'wound', and it refers to both psychological and physiological aspects. Trauma occurs as a result of a serious event and it has deep roots in various levels of the human mind and behaviour.

What causes trauma? Psychological trauma is a broad concept, and its origins are co-related with two well-known mechanisms of the human mind: stress and memory.

Albeit commonly associated with negativeness, stress is an evolutionary advantage. The stress triggering mechanism allows most people to react to dangerous situations prior to consciously detecting it - also known as 'fight or flight' response. The level of a stress response generally dictates the intensity of psychological trauma in an individual.

Memory and trauma are interrelated processes - without the memory of a traumatic event, psychological trauma is non-existent. In addition, memory also plays an active role in the incidence and intensity of stressful responses. Once stress is triggered by an event (a stressor), several processes instigate the assessment of the situation by higher functions of the mind (prefrontal cortex - responsible for decision-making).

If the situation does not constitute danger, the stressing mechanism will gradually shut down and the body will return to normal functioning. If the situation reflects danger, the individual will need to decide what to do - and in that process - the amygdala (a part of the limbic system which plays a key role in human emotions, particularly fear) directs the hippocampus (a central region of human memory) to imprint that information differently from other events. This long-term storage of the memory is explained by its emotionally-attached significance.

Such a mechanism is another 'smart' human feature. Next time the same stressor (or similar) is identified, that memory will be instantly retrieved in order to assist in the individual's reaction. At a subconscious level, there will be an overstressed response to the event. At a conscious level, comparison and previous experience will induce better decision making.

Trauma and Health

Trauma is inevitable in our lives. From the birth of a child, to all stages of its development - traumatic events are common and also part of the 'human experience'. However, the level of trauma caused by an event dictates the short and long-term effects of that occurrence.

For instance, trauma can be related to several mental illnesses. Conditions such as Schizophrenia, Depression, and Bipolar Disease can be triggered by traumatic events. One condition in particular, is directly related to trauma and very common in the counselling context: Post Traumatic Stress Disorder (PSTD).

Post Traumatic Stress Disorder (PSTD) occurs when an individual develops a set of behaviours and reactions based on a traumatic event. The traumatic experience interferes with normal functioning, causing the affected person to present avoidance behaviour.

This condition can occur at any age and traumatic stress can be cumulative over a lifetime. Responses to trauma include feelings of intense fear, helplessness, and/or horror. This condition has roots in the relationship between stress, trauma and memory.

It is perceived that PTSDs are originated from a 'defect' in the brain's memory processing functions. As previously described, emotionally attached events are stored differently (at a 'deeper' level). These memories include stressful and traumatic events, particularly those which resulted in some kind of harm and emotional distress to the person.

Upon the identification of the same stressor (or similar) that caused a reaction for the previous situation, the body would instantly trigger an overstressed response. However, in most cases, the new event will not constitute a threat. For instance, a noise could be a stressor from a situation in which a person ended up being assaulted. The same noise, or something similar, could occur in other situations which are harmless. Unless that stressor is reinforced (results in danger over time), your brain will adapt to the stimulus and gradually reduce the stressful response. This process is called 'extinction' (Pavlov's Theory).

If extinction fails to take place, the individual will continue to react (stressfully) to the original stimulus, or similar ones. This is the case for PTSD sufferers. Because the human body is not prepared to maintain stressful status continually, side effects will appear. These effects are both physiological (Coronary Heart Disease, ageing acceleration, etc) and psychological (fear, avoidance, etc).

This explains the occurrence of PTSD in war veterans who were exposed to stress over a long period of time and accident survivors who have been exposed to a highly stressful and traumatic situation.

Trauma and Counselling

The effects of trauma may vary greatly among people. The extent, frequency and intensity of each event are presented according to each person's mindset and previous experiences. And because traumatic events are cumulative over life, it can be quite difficult to provide a treatment that comprises all problems derived from separate traumas.

Most people adapt to trauma in their lives, and through the extinction process, do not experience much psychological harm derived from past events. However, for patients with PTSD, and other stress-triggered conditions, the situation requires further attention.

Currently, counsellors use three major treatments to combat PTSD. These treatments are largely based in psychotherapy, introspection and conditioning:

Cognitive Behav